Lard-lamp



H. ROSE Lamp.l

\ Patented Aug.l 4,1843.

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NITED STATES PATENT OFFICE..

HENRY ROSE, OF RUSHVILLE, ILLINOIS.

LAIRD-LAMP.

Specification of Letters Patent N0. 3,206, datedAugust 4, 1843.

T 0 all whom it may concern Be it known that I, HENRY Ross, of Rushville, in the county of Schuyler and Sta-te of Illinois, have invented a new and useful Improvement in LardLamps;yand I do herebydeclare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing, in whichi Figure l, is an outside view; Fig. 2, a vertical section.

The nature of my invention consists lin adding a ventilator to the lamp for com inunicating with the chamber below the pisto-n and projecting the end of the screw that elevates the piston above the wicks, so` that it can be turned without moving the lamp by which means the lamp is less liable to leak or get out of order.

In constructing my lamp the stand (o) is` formed in the usual way and to it is attached a cylinder (Z2) of suliicient capacity to contain the necessary quantity of lard for use; on the top of this cylinder a cap (o) is firmly atlixed, in which the tubes which hold the wicks are inserted; said cap is concave on its upper side; in its center there is a hole, and on one side there is a short tube (e) by which it can be filled. To one side of the cylinder (Z9) a tube (d) is joined, the lower end of which opens into the cylinder near the stand, and its upper end is brought.

up and turns over into the cup, formed bythe cap A screw (f) is putupright in the center' of the cylinder and projects up thro-ugh the `center hole in the cap above the wick tubes; on its'lower end there is a head that fits into a recess in the stand made to receive it so that it cannot rise or fall, but has freedom to revolve in its place. A piston (k) is made to fit the insideof thel cylinder and is packed tight; the center of this piston is pierced and a female screw is eut on it, through which the screw (f) works.

Thescrew (f) has a hole in its upper end in which a rod can be inserted to turn it by, and by means of it the piston can be raised orlovvered. Then the piston is at its lowest point, the chamber above it is lilled with lard; when this burns down the piston is raised so as to keep the lard always up tothe wick until all is consumed; but if any of it should leak through below, the piston when it is lowered down again the lard will be driven up through the tube (el) into the cup of the cap without spilling What I claim as my invention and desire to secure by Letters Patent isl. The project-ion on the screw (f) above the wicks of the lamp by which it canv be turned, in combination with the lamp constructed and arranged as herein specified.

2. I also claim the tube (CZ) combined with the movable piston lamp in the manner and for the purpose herein described.

HENRY ROSE. lVitnesses:

J. J. GREENOUGH, Jol-IN Hirn, 

